EP1522763A1 - Getriebe mit parallelen Wellen - Google Patents

Getriebe mit parallelen Wellen Download PDF

Info

Publication number
EP1522763A1
EP1522763A1 EP04017757A EP04017757A EP1522763A1 EP 1522763 A1 EP1522763 A1 EP 1522763A1 EP 04017757 A EP04017757 A EP 04017757A EP 04017757 A EP04017757 A EP 04017757A EP 1522763 A1 EP1522763 A1 EP 1522763A1
Authority
EP
European Patent Office
Prior art keywords
shaft
gear
countershaft
speed
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04017757A
Other languages
English (en)
French (fr)
Other versions
EP1522763B1 (de
Inventor
Kazuma Hatakeyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1522763A1 publication Critical patent/EP1522763A1/de
Application granted granted Critical
Publication of EP1522763B1 publication Critical patent/EP1522763B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H2003/0938—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts with multiple gears on the input shaft directly meshing with respective gears on the output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19223—Disconnectable counter shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19228—Multiple concentric clutch shafts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19233—Plurality of counter shafts

Definitions

  • the present invention relates to a parallel shaft transmission, in which gears are provided over a plurality of shafts disposed in parallel with one another, the gears being meshed in pairs so that the engagement and disengagement of gears to corresponding ones of the shafts establishes a power transmission path through the shafts in engagement to achieve a desirable speed change ratio, which corresponds to a momentary gear ratio of the transmission.
  • a gear on the output shaft is used commonly to establish two different speed change ratios, so that the number of gears disposed on the output shaft is made relatively small.
  • the gear on the input shaft and that on the intermediary shaft both meshing with such a commonly used gear on the output shaft are placed in a common plane in the transmission. As a result, the size of the transmission in the longitudinal direction of the shafts is much smaller than a similar transmission designed otherwise.
  • a parallel shaft transmission comprises an input shaft, a first countershaft and an output shaft, which are disposed in parallel with one another, and further comprises a second countershaft, which is provided externally, coaxially and rotatably with respect to the first countershaft.
  • an input-shaft first gear for example, the first main drive gear GM1V described in the following embodiment
  • an input-shaft second gear for example, the second main drive gear GM2V described in the following embodiment
  • an input-shaft third gear for example, the fourth, sixth and seventh speed drive gear G467V described in the following embodiment
  • first clutching means for example, the sixth speed clutch CT6 described in the following embodiment
  • a first countershaft gear (for example, the second main driven gear GM2N described in the following embodiment) is provided on the first countershaft to mesh with the input-shaft second gear, and second clutching means (for example, the seventh speed clutch CT7 described in the following embodiment) is provided for connecting or disconnecting the first countershaft to or from the second countershaft.
  • second clutching means for example, the seventh speed clutch CT7 described in the following embodiment
  • a second countershaft first gear (for example, the first main driven gear GM1N described in the following embodiment) is provided rotatably on the second countershaft to mesh with the input-shaft first gear, with third clutching means (for example, the fourth speed clutch CT4 described in the following embodiment) for connecting or disconnecting the second countershaft first gear to or from the second countershaft, and a second countershaft second gear (for example, the fourth speed drive gear G4V described in the following embodiment) is provided rotatably on the second countershaft to mesh with the input-shaft third gear, with fourth clutching means (for example, the selective clutch CTD described in the following embodiment) for connecting or disconnecting the second countershaft second gear to or from the second countershaft.
  • An output-shaft first gear (for example, the fourth, fifth, sixth and seventh speed driven gear G4567N described in the following embodiment) is provided on the output shaft to mesh with the input-shaft third gear.
  • the rotational power of a prime mover (for example, an engine), which is input to the input shaft of the transmission, is transmitted to the first countershaft through the input-shaft second gear and the first countershaft gear.
  • the first countershaft rotates in the direction opposite to that of the input shaft.
  • the transmission is set in a neutral condition, where the rotational power of the prime mover is not transmitted to the output shaft.
  • this speed change condition corresponds to the forward sixth speed condition described in the following embodiment.
  • the rotational power is transmitted from the input shaft by the first clutching means through the input-shaft third gear and the output-shaft first gear to the output shaft, so that the output shaft rotates in one direction (forward direction).
  • the transmission is set into a second speed change condition (this speed change condition corresponds to the forward seventh speed condition described in the following embodiment).
  • the rotational power is transmitted from the input shaft through the input-shaft second gear and the first countershaft gear to the first countershaft, by the second clutching means to the second countershaft and then by the fourth clutching means through the second countershaft second gear, the input-shaft third gear (rotating over the input shaft) and the output-shaft first gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the transmission is set into a third speed change condition (this speed change condition corresponds to the forward fourth speed condition described in the following embodiment).
  • the rotational power is transmitted from the input shaft through the input-shaft first gear and the second countershaft first gear and by the third clutching means to the second countershaft and then by the fourth clutching means through the second countershaft second gear, the input-shaft third gear (rotating over the input shaft) and the output-shaft first gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the parallel shaft transmission may further comprise an intermediary shaft and a first idle shaft (for example, the connecting idle shaft 30 described in the following embodiment), which are disposed in parallel with the input shaft.
  • a first idle shaft for example, the connecting idle shaft 30 described in the following embodiment
  • an input-shaft fourth gear for example, the first main drive gear GM1V described in the following embodiment
  • a first idle gear for example, the connecting idle gear GCC described in the following embodiment
  • an intermediary shaft first gear (for example, the connecting driven gear GCN described in the following embodiment) is provided on the intermediary shaft to mesh with the first idle gear
  • an intermediary shaft second gear (for example, the fifth speed drive gear G5V described in the following embodiment) is provided on the intermediary shaft to mesh with the output-shaft first gear
  • power-switching means for example, the fifth speed clutch CT5 described in the following embodiment
  • the input-shaft first gear and the input-shaft fourth gear comprise an identical gear.
  • the intermediary shaft rotates together with the input shaft in the same rotational direction.
  • the transmission is set in a neutral condition. From this neutral condition, if the the power transmission between the intermediary shaft first gear and the intermediary shaft second gear is enabled, then the transmission is set into a fourth speed change condition (this speed change condition corresponds to the forward fifth speed condition described in the following embodiment).
  • the rotational power is transmitted from the input shaft through the input-shaft fourth gear, the first idle gear, the intermediary shaft first gear, the intermediary shaft second gear and the output-shaft first gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the intermediary shaft second gear is provided rotatably on the intermediary shaft
  • the power-switching means includes fifth clutching means (for example, the fifth speed clutch CT5 described in the following embodiment), which connects or disconnects the intermediary shaft second gear to or from the intermediary shaft.
  • the transmission may further comprise an input-shaft fifth gear (for example, the third speed and reverse drive gear G3RV described in the following embodiment), which is provided rotatably on the input shaft, with sixth clutching means (for example, the third speed clutch CT3 described in the following embodiment) for connecting or disconnecting the input-shaft fifth gear to or from the input shaft.
  • the transmission comprises an intermediary shaft third gear (for example, the second speed drive gear G2V described in the following embodiment), which is provided rotatably on the intermediary shaft, with seventh clutching means (for example, the second speed clutch CT2 described in the following embodiment) for connecting or disconnecting the intermediary shaft third gear to or from the intermediary shaft, and an output-shaft second gear (for example, the second and third speed and reverse driven gear G23RN described in the following embodiment), which is provided on the output shaft to mesh with the input-shaft fifth gear and with the intermediary shaft third gear.
  • intermediary shaft third gear for example, the second speed drive gear G2V described in the following embodiment
  • seventh clutching means for example, the second speed clutch CT2 described in the following embodiment
  • an output-shaft second gear for example, the second and third speed and reverse driven gear G23RN described in the following embodiment
  • the rotational power is transmitted from the input shaft by the sixth clutching means through the input-shaft fifth gear and the output-shaft second gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the transmission is set into a sixth speed change condition (this speed change condition corresponds to the forward second speed condition described in the following embodiment).
  • the rotational power is transmitted from the input shaft through the input-shaft fourth gear, the first idle gear and the intermediary shaft first gear to the intermediary shaft. This rotation is then transmitted by the seventh clutching means through the intermediary shaft third gear and the output-shaft second gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the parallel shaft transmission according to the present invention may further comprise a second countershaft third gear (for example, the reverse drive gear GRV described in the following embodiment), which is provided rotatably on the second countershaft, a second idle shaft (for example, the reversing idle shaft 70 described in the following embodiment), which is disposed in parallel with the input shaft, a second idle gear (for example, the reverse idle gear GRI described in the following embodiment), which is provided on the second idle shaft to mesh with the second countershaft third gear and with the input-shaft fifth gear, and eighth clutching means (for example, the selective clutch CTD described in the following embodiment), which connects or disconnects the second countershaft third gear to or from the second countershaft.
  • the fourth clutching means and the eighth clutching means comprise one selective clutching means (for example, the selective clutch CTD described in the following embodiment), which connects either the second countershaft second gear or the second countershaft third gear to the second countershaft.
  • This rotation is then transmitted by the eighth clutching means through the second countershaft third gear, the second idle gear, the input-shaft fifth gear (rotating over the input shaft) and the output-shaft second gear to the output shaft, so that the output shaft rotates in the (reverse) direction opposite to the above mentioned forward direction.
  • the intermediary shaft is formed in a hollow figure, and an auxiliary intermediary shaft is provided internally, coaxially and rotatably with respect to the intermediary shaft.
  • the transmission further comprises ninth clutching means (for example, the eighth speed clutch CT8 described in the following embodiment), which connects or disconnects the auxiliary intermediary shaft to or from the intermediary shaft, an auxiliary intermediary shaft gear (for example, the eighth speed drive gear G8V described in the following embodiment), which is provided on the auxiliary intermediary shaft, and an output-shaft third gear (for example, the eighth speed driven gear G8N described in the following embodiment), which is provided on the output shaft to mesh with the auxiliary intermediary shaft gear.
  • ninth clutching means for example, the eighth speed clutch CT8 described in the following embodiment
  • an auxiliary intermediary shaft gear for example, the eighth speed drive gear G8V described in the following embodiment
  • G8N the eighth speed driven gear
  • the transmission is set in a neutral condition. From this neutral condition, if the intermediary shaft and the auxiliary intermediary shaft are connected with each other, then the transmission is set into an eighth speed change condition (this speed change condition corresponds to the forward eighth speed condition described in the following embodiment).
  • this speed change condition corresponds to the forward eighth speed condition described in the following embodiment.
  • the rotational power is transmitted from the input shaft through the input-shaft fourth gear, the first idle gear and the intermediary shaft first gear to the intermediary shaft. This rotation is then transmitted by the ninth clutching means to the auxiliary intermediary shaft and then through the auxiliary intermediary shaft gear and the output-shaft third gear to the output shaft, so that the output shaft rotates in the above mentioned forward direction.
  • the parallel shaft transmission according to the present invention achieves a plurality of speed change ratios for forward drive as described above, the size of the transmission in its axial direction is relatively small because the gear (output-shaft first gear) provided on the output shaft to rotate the output shaft in the forward direction in the first speed change condition is used commonly to rotate the output shaft in the forward direction also in the second speed change condition and in the third speed change condition.
  • this specific gear is a commonly used gear.
  • the number of the gears to be provided on the output shaft is kept relatively small even though the transmission is equipped with this large number of forward speed change ratios.
  • the transmission according to the present invention achieves a compact design notwithstanding the large number of speed change ratios.
  • the transmission according to the present invention achieves a design that is effective in reducing the weight as well as the manufacturing cost of the transmission.
  • the parallel shaft transmission further comprises an intermediary shaft and a first idle shaft, which are disposed in parallel with the input shaft, an input-shaft fourth gear, which is provided on the input shaft, a first idle gear, which is provided on the first idle shaft to mesh with the input-shaft fourth gear, an intermediary shaft first gear, which is provided on the intermediary shaft to mesh with the first idle gear, an intermediary shaft second gear, which is provided on the intermediary shaft to mesh with the output-shaft first gear, and power-switching means, which enables or disables power transmission between the intermediary shaft first gear and the intermediary shaft second gear.
  • the gear (output-shaft first gear) provided on the output shaft to rotate the output shaft in the forward direction in the first speed change condition is used commonly to rotate the output shaft in the forward direction also in the second speed change condition, in the third speed change condition and in the fourth speed change condition.
  • the size of the transmission in its axial direction increases by the degree of only one gear for the increase of one additional speed change ratio. Therefore, the parallel shaft transmission achieves a relatively small size in axial direction for the large number of speed change ratios.
  • the gear provided on the input shaft to rotate the second countershaft can be used commonly to rotate the intermediary shaft. This arrangement contributes to the reduction of the size of the transmission in its axial direction.
  • the power-switching means includes fifth clutching means, which connects or disconnects the intermediary shaft second gear to or from the intermediary shaft, and where the transmission further comprises an input-shaft fifth gear, which is provided rotatably on the input shaft, sixth clutching means, which connects or disconnects the input-shaft fifth gear to or from the input shaft, an intermediary shaft third gear, which is provided rotatably on the intermediary shaft, seventh clutching means, which connects or disconnects the intermediary shaft third gear to or from the intermediary shaft, and an output-shaft second gear, which is provided on the output shaft to mesh with the input-shaft fifth gear and with the intermediary shaft third gear.
  • the gear (output-shaft second gear) provided on the output shaft to rotate the output shaft in the forward direction in the fifth speed change condition is used commonly to rotate the output shaft in the forward direction also in the sixth speed change condition.
  • the size of the transmission in its axial direction increases by the degree of only one gear for the increase of two additional speed change ratios for forward drive. Therefore, the size of the transmission in its axial direction is relatively small notwithstanding the large number of speed change ratios.
  • the parallel shaft transmission further comprises a second countershaft third gear, which is provided rotatably on the second countershaft, a second idle shaft, which is disposed in parallel with the input shaft, a second idle gear, which is provided on the second idle shaft to mesh with the second countershaft third gear and with the input-shaft fifth gear, and eighth clutching means, which connects or disconnects the second countershaft third gear to or from the second countershaft.
  • the gear (output-shaft second gear) provided on the output shaft to rotate the output shaft in the forward direction in the fifth speed change condition is used commonly to rotate the output shaft in the forward direction in the sixth speed change condition and also to rotate the output shaft in the reversed rotational direction in the seventh speed change condition.
  • the transmission is equipped with a reverse speed change ratio without any increase in the size of the transmission in its axial direction.
  • the fourth clutching means and the eighth clutching means can comprise one selective clutching means, which connects either the second countershaft second gear or the second countershaft third gear to the second countershaft. This arrangement can further improve the lightness and compactness of the transmission.
  • the intermediary shaft is formed in a hollow figure, and an auxiliary intermediary shaft is provided internally, coaxially and rotatably with respect to the intermediary shaft, and where the transmission further comprises ninth clutching means, which connects or disconnects the auxiliary intermediary shaft to or from the intermediary shaft, an auxiliary intermediary shaft gear, which is provided on the auxiliary intermediary shaft, and an output-shaft third gear, which is provided on the output shaft to mesh with the auxiliary intermediary shaft gear.
  • these shafts i.e., the intermediary shaft and the auxiliary intermediary shaft
  • are disposed radially one over the other. This arrangement enables the transmission to acquire one additional speed change ratio for forward drive with an addition of only a few more parts.
  • FIG. 1 is a skeleton diagram describing schematically the construction of a parallel shaft transmission as a first embodiment according to the present invention.
  • FIG. 2 is a table describing relations between the condition of first ⁇ seventh clutches and a selective clutch and the speed change ratio of the first embodiment transmission.
  • FIG. 3 is a table listing examples of modification of the first embodiment, with each example of modification being described by contrasting the alphanumeric codes of the clutches in the first embodiment with those of each row of the modification list.
  • FIG. 4 is a skeleton diagram describing schematically the construction of a parallel shaft transmission as a second embodiment according to the present invention.
  • FIG. 5 is a table describing relations between the condition of first ⁇ eighth clutches and a selective clutch and the speed change ratio of the second embodiment transmission.
  • FIG. 1 shows a first embodiment of parallel shaft transmission according to the present invention (hereinafter referred to as "the transmission”).
  • the transmission 1 as a first embodiment converts the torque and rotational speed input from an engine EG and transmits the rotational power of the engine EG to a differential mechanism 80, which is connected rotationally to right and left drive wheels WL and WR.
  • the transmission 1 has an input shaft 10, a connecting idle shaft 30, an intermediary shaft 20, a first countershaft 40, a second countershaft 50, an output shaft 60 and a reversing idle shaft 70, all of which are disposed in parallel with one another and accommodated together with the differential mechanism 80 in a transmission case 3.
  • the input shaft 10 is supported rotatably by bearings B1a and B1b and connected through a coupling mechanism CP to the crank-shaft CS of the engine EG. Over the input shaft 10, disposed from the side of the engine EG (i.e., from the right side of the drawing in FIG.
  • first main drive gear GM1V and the second main drive gear GM2V are each fixed on the input shaft 10 (i.e., not rotatable with respect to the input shaft 10) while the fourth, sixth and seventh speed drive gear G467V and the third speed and reverse drive gear G3RV are each provided rotatably over the input shaft 10 (i.e., rotatable with respect to the input shaft 10).
  • the sixth speed clutch CT6 engages or disengages the fourth, sixth and seventh speed drive gear G467V to or from the input shaft 10
  • the third speed clutch CT3 engages or disengages the third speed and reverse drive gear G3RV to or from the input shaft 10.
  • Both the clutches CT6 and CT3 are friction clutches each incorporating a hydraulically actuated piston. Such a clutch is well-known in this field, so no additional description of these clutches is presented here.
  • the intermediary shaft 20 is supported also rotatably by bearings B2a and B2b. Over this shaft, disposed from the side of the engine EG (i.e., from the right side of the drawing in FIG. 1) are a first speed clutch CT1, a first speed drive gear G1V, a connecting driven gear GCN, a fifth speed drive gear G5V, a fifth speed clutch CT5, a second speed clutch CT2 and a second speed drive gear G2V
  • the first speed drive gear G1V, the fifth speed drive gear G5V and the second speed drive gear G2V are each disposed rotatably over the intermediary shaft 20, but the connecting driven gear GCN is fixed on the intermediary shaft 20.
  • the first speed clutch CT1 engages or disengages the first speed drive gear G1V to or from the intermediary shaft 20
  • the fifth speed clutch CT5 engages or disengages the fifth speed drive gear G5V to or from the intermediary shaft
  • the second speed clutch CT2 engages or disengages the second speed drive gear G2V to or from the intermediary shaft 20.
  • These three clutches CT1, CT5 and CT2 are friction clutches of the same type as the above mentioned clutches CT6 and CT3, so no additional description of the clutches is provided here.
  • the connecting idle shaft 30 is supported also rotatably by bearings B3a and B3b, and a connecting idle gear GCC is provided fixedly on this shaft.
  • the connecting idle gear GCC always meshes both with the first main drive gear GM1V, which is provided on the input shaft 10, and with the connecting driven gear GCN, which is provided on the intermediary shaft 20.
  • the first countershaft 40 is supported also rotatably by bearings B4a and B4b, and a second main driven gear GM2N is provided fixedly on this shaft.
  • the second main driven gear GM2N always meshes with the second main drive gear GM2V, which is provided on the input shaft 10.
  • the second countershaft 50 is disposed coaxially external to the first countershaft 40 and rotatable with respect to the first countershaft 40.
  • a seventh speed clutch CT7 disposed from the side of the engine EG (i.e., from the right side of the drawing in FIG. 1) are a seventh speed clutch CT7, a fourth speed clutch CT4, a first main driven gear GM1N, a fourth speed drive gear G4V, a selective clutch CTD and a reverse drive gear GRV
  • the first main driven gear GM1N, the fourth speed drive gear G4V and the reverse drive gear GRV are provided each rotatably over the second countershaft 50.
  • the seventh speed clutch CT7 engages or disengages the second countershaft 50 to or from the first countershaft 40
  • the fourth speed clutch CT4 connects or disconnects the first main driven gear GM1N to or from the second countershaft 50.
  • Both these clutches CT7 and CT4 are well-known friction clutches of the same type as the above mentioned clutches, each of which has a hydraulically actuated piston, so no additional description of these clutches is provided here.
  • the selective clutch CTD which is provided axially slidably on the second countershaft 50, is integrated with a selector SL whose position over the second countershaft 50 is controlled to shift axially by the operation of a hydraulic mechanism (not shown).
  • the dog teeth (not shown) of the selective clutch CTD clutches the closer side of the fourth speed drive gear G4V or that of the reverse drive gear GRV, correspondingly.
  • either the fourth speed drive gear G4V or the reverse drive gear GRV is connected rotationally to the second countershaft 50.
  • the selector SL of the selective clutch CTD is shifted onto the side of the fourth speed drive gear G4V (rightward in the drawing of FIG. 1), then the fourth speed drive gear G4V is connected to the second countershaft 50.
  • the selector SL is shifted onto the side of the reverse drive gear GRV (leftward in the drawing of FIG. 1), then the reverse drive gear GRV is connected to the second countershaft 50.
  • the output shaft 60 is supported also rotatably by bearings B6a and B6b. Over this shaft, disposed from the side of the engine EG (i.e., from the right side of the drawing in FIG. 1) are a differential drive gear GFV, a first speed driven gear G1N, a fourth, fifth, sixth and seventh speed driven gear G4567N and a second and third speed and reverse driven gear G23RN.
  • the differential drive gear GFV, the first speed driven gear G1N, the fourth, fifth, sixth and seventh speed driven gear G4567N and the second and third speed and reverse driven gear G23RN are each fixed on the output shaft 60.
  • the differential drive gear GFV always meshes with a differential driven gear GFN, which drives the differential mechanism 80 (the broken line drawn between the differential drive gear GFV and the differential driven gear GFN in FIG. 1 represents that these gears GFV and GFN mesh with each other. The same is said for FIG. 4).
  • the first speed driven gear G1N always meshes with the first speed drive gear G1V, which is provided on the intermediary shaft 20
  • the fourth, fifth, sixth and seventh speed driven gear G4567N always meshes both with the fourth, sixth and seventh speed drive gear G467V, which is provided on the input shaft 10, and with the fifth speed drive gear G5V, which is provided on the intermediary shaft 20.
  • the second and third speed and reverse driven gear G23RN always meshes both with the third speed and reverse drive gear G3RV, which is provided on the input shaft 10, and with the second speed drive gear G2V, which is provided on the intermediary shaft 20.
  • the reversing idle shaft 70 is supported also rotatably by bearings B7a and B7b, and a reverse idle gear GRI is fixed on this shaft.
  • the reverse idle gear GRI always meshes both with the third speed and reverse drive gear G3RV, which is provided on the input shaft 10, and with the reverse drive gear GRV, which is provided on the second countershaft 50.
  • the differential mechanism 80 has a differential mechanism 83 in a differential case 81, the differential mechanism 83 comprising two differential pinions 82a and two side gears 82b.
  • Right and left axles ASR and ASL which are disposed in parallel with the output shaft 60, are fixed to the side gears 82b, respectively, and the differential case 81 is supported by bearings B8a and B8b.
  • the differential case 81 can rotate around the axis of the right and left axles ASR and ASL, which have, correspondingly, right and left drive wheels WR and WL (front wheels of the vehicle).
  • the differential driven gear GFN which is fixed on the differential case 81, always meshes with the differential drive gear GFV as mentioned above, the whole of the differential mechanism 80 rotates around the right and left axles ASR and ASL as the output shaft 60 rotates.
  • FIG. 2 is a table describing relations between the operational condition of the first ⁇ seventh clutches CT1, CT2, CT3, CT4, CT5, CT6 and CT7 and the selective clutch CTD and the speed change ratios of the transmission 1.
  • the columns with headings CT1, CT2, CT3, CT4, CT5, CT6 and CT7 in the table represent the corresponding clutches, respectively, and in each column, a cell marked by "ON" represents that the clutch represented by the column is set to connect the corresponding gear to the corresponding shaft (i.e., the input shaft 10 or the intermediary shaft 20).
  • a cell marked by "OFF" it represents that the clutch is set to disconnect the corresponding gear from the corresponding shaft (i.e., the input shaft 10 or the intermediary shaft 20).
  • a cell marked by a downward arrow represents the same condition for the clutch as represented by the cell right above.
  • the rotational power of the engine EG is input from the crank-shaft CS through the coupling mechanism CP to the input shaft 10 of the transmission 1, and it is then transmitted through the first main drive gear GM1V, the connecting idle gear GCC and the connecting driven gear GCN to the intermediary shaft 20.
  • the intermediary shaft 20 rotates together with the input shaft 10 in the same rotational direction.
  • the rotational power of the engine EG is transmitted from the input shaft 10 through the second main drive gear GM2V and the second main driven gear GM2N to the first countershaft 40.
  • the first countershaft 40 rotates together with the input shaft 10 but in the direction opposite to that of the input shaft 10.
  • the selector SL of the selective clutch CTD is positioned to the fourth speed drive gear G4V
  • the fourth speed drive gear G4V is engaged to the second countershaft 50 while the reverse drive gear GRV is disengaged from the second countershaft 50.
  • the first speed clutch CT1 is turned from “OFF” to "ON” to connect the first speed drive gear G1V to the intermediary shaft 20.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V, the connecting idle gear GCC and the connecting driven gear GCN to the intermediary shaft 20, is transmitted by the first speed clutch CT1 through the first speed drive gear G1V and the first speed driven gear G IN to the output shaft 60.
  • the first speed clutch CT1 is turned from “ON” to "OFF", and the second speed clutch CT2 is turned from “OFF” to “ON”.
  • the first speed drive gear G1V is disconnected from the intermediary shaft 20 while the second speed drive gear G2V is connected to the intermediary shaft 20.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V, the connecting idle gear GCC and the connecting driven gear GCN to the intermediary shaft 20, is transmitted by the second speed clutch CT2 through the second speed drive gear G2V and the second and third speed and reverse driven gear G23RN to the output shaft 60.
  • the second speed clutch CT2 is turned from “ON” to "OFF", and the third speed clutch CT3 is turned from “OFF” to “ON”.
  • the second speed drive gear G2V is disconnected from the intermediary shaft 20 while the third speed and reverse drive gear G3RV is connected to the input shaft 10.
  • the power of the engine EG is transmitted from the input shaft 10 by the third speed clutch CT3 through the third speed and reverse drive gear G3RV and the second and third speed and reverse driven gear G23RN to the output shaft 60.
  • the third speed clutch CT3 is turned from “ON” to "OFF", and the fourth speed clutch CT4 is turned from “OFF” to “ON”.
  • the third speed and reverse drive gear G3RV is disconnected from the input shaft 10 while the first main driven gear GM1N is connected to the second countershaft 50.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V to the first main driven gear GM1N, is transmitted by the fourth speed clutch CT4 to the second countershaft 50.
  • This rotation is then transmitted by the selective clutch CTD through the fourth speed drive gear G4V, the fourth, sixth and seventh speed drive gear G467V (rotating over the input shaft 10) and the fourth, fifth, sixth and seventh speed driven gear G4567N to the output shaft 60.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V, the connecting idle gear GCC and the connecting driven gear GCN to the intermediary shaft 20, is transmitted by the fifth speed clutch CT5 through the fifth speed drive gear G5V and the fourth, fifth, sixth and seventh speed driven gear G4567N to the output shaft 60.
  • the fifth speed clutch CT5 is turned from “ON” to "OFF", and the sixth speed clutch CT6 is turned from “OFF” to “ON”.
  • the fifth speed drive gear G5V is disconnected from the intermediary shaft 20 while the fourth, sixth and seventh speed drive gear G467V is connected to the input shaft 10.
  • the power of the engine EG is transmitted from the input shaft 10 by the sixth speed clutch CT6 through the fourth, sixth and seventh speed drive gear G467V and the fourth, fifth, sixth and seventh speed driven gear G4567N to the output shaft 60.
  • the sixth speed clutch CT6 is turned from “ON” to "OFF"
  • the seventh speed clutch CT7 is turned from "OFF” to "ON”.
  • the fourth, sixth and seventh speed drive gear G467V is disconnected from the input shaft 10 while the first countershaft 40 and the second countershaft 50 are connected to each other.
  • the power of the engine EG is transmitted from the input shaft 10 through the second main drive gear GM2V and the second main driven gear GM2N to the first countershaft 40.
  • This rotation is then transmitted by the seventh speed clutch CT7 to the second countershaft 50 and then by the selective clutch CTD through the fourth drive gear G4V, the fourth, sixth and seventh speed drive gear G467V (rotating over the input shaft) and the fourth, fifth, sixth and seventh speed driven gear G4567N to the output shaft 60.
  • the fourth speed clutch CT4 is turned from “OFF” to "ON”, and the selector SL of the selective clutch CTD is shifted from the fourth speed drive gear G4V to the reverse drive gear GRV
  • the first main driven gear GM1N is connected to the second countershaft 50 while the reverse drive gear GRV is connected also to the second countershaft 50.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V to the first main driven gear GM1N, is then transmitted by the fourth speed clutch CT4 to the second countershaft 50 and further transmitted by the selective clutch CTD through the reverse drive gear GRV, the reverse idle gear GRI, the third speed and reverse drive gear G3RV (rotating over the input shaft 10) and the second and third speed and reverse driven gear G23RN to the output shaft 60.
  • the gear (fourth, fifth, sixth and seventh speed driven gear G4567N) provided on the output shaft 60 to rotate the output shaft 60 in the forward direction in the forward fourth speed condition is used commonly to rotate the output shaft 60 in the forward direction also in the forward fifth speed condition, in the forward sixth speed condition and in the forward seventh speed condition.
  • this specific gear is a commonly used gear. In this way, the number of the gears to be provided on the output shaft 60 for achieving this large number of forward speed change ratios is kept relatively small. As a result, the size of the transmission 1 in its axial direction is relatively small, so the transmission 1 has a compact design.
  • the second and third speed and reverse driven gear G23RN is provided as a commonly used gear on the output shaft 60 to rotate the output shaft 60 in the forward rotational direction both in the forward second speed condition and in the forward third speed condition and also to rotate the output shaft 60 in the reversed rotational direction in the reverse speed condition.
  • the transmission 1 is equipped with a reverse speed change ratio without increasing the size of the transmission in its axial direction.
  • the connecting idle gear GCC is provided rotatably over the first countershaft 40, then the connecting idle shaft 30 can be eliminated.
  • the provision of the connecting idle shaft 30 to support the connecting idle gear GCC beside the first countershaft 40 enables gears to be used commonly as described above and also increases the freedom in determining the ratio of each speed change condition.
  • the distance between the input shaft 10 and the first countershaft 40 (and the second countershaft 50) and the distance between the first countershaft 40 and the intermediary shaft 20 are made substantially equal to each other, and thereby, each distance among the shafts is kept relatively short.
  • the diameters of the gears are made relatively small. Therefore, the diameter of the transmission case 3 is also made small, lightening the transmission greatly.
  • the on and off actions of the first ⁇ seventh speed clutches CT1, CT2, CT3, CT4, CT5, CT6 and CT7 for each speed change ratio are determined in correspondence to the diameters of the gears and the distances among the shafts. Therefore, the combination of the on and off actions of the clutches for each speed change ratio presented in the above description is only an example. In other words, a variety of combinations of the on and off actions of the clutches are possible for the transmission 1 if the gears have different diameters with correspondingly different distances among the shafts.
  • another transmission can be designed with the same number of speed change ratios (seven forward speed change ratios and one reverse speed change ratio) as the above described transmission 1 as a first embodiment by replacing the actions of the fifth speed clutch CT5 for each speed change ratio in the above described first embodiment with those of the sixth speed clutch CT6, by replacing the actions of the sixth speed clutch CT6 for each speed change ratio with those of the seventh speed clutch CT7, and by replacing the actions of the seventh speed clutch CT7 for each speed change ratio with those of the fifth speed clutch CT5 (refer to modification example 1 in the table of FIG. 3).
  • the table in FIG. 3 lists such examples.
  • FIG. 4 shows a transmission 1' as a second embodiment.
  • the intermediary shaft 20 is formed hollow (this hollow intermediary shaft is marked by 20'); an auxiliary intermediary shaft 25 is provided coaxially and rotatably inside the intermediary shaft 20'; an eighth speed clutch CT8 is provided for engaging or disengaging the intermediary shaft 20' to or from the auxiliary intermediary shaft 25; an eighth speed drive gear G8V is provided fixedly on the auxiliary intermediary shaft 25; and an eighth speed driven gear G8N is provided fixedly between the second and third speed and reverse driven gear G23RN and the bearing B6b on the output shaft 60.
  • the eighth speed driven gear G8N always meshes with the eighth speed drive gear G8V.
  • FIG. 5 is a table that describes relations between the operational condition of the first ⁇ eighth clutches CT1, CT2, CT3, CT4, CT5, CT6, CT7 and CT8 and the selective clutch CTD and the speed change ratios of the transmission 1' as a second embodiment.
  • the power transmission paths of the transmission 1' are described in relation to the speed change ratios of the transmission 1'.
  • the condition of the clutches and the gears of the transmission 1' as a second embodiment is the same as that of the transmission 1 as a first embodiment in the following cases: the transmission 1' is in its neutral condition, is upshifted from the neutral condition to its forward first speed condition, is upshifted from the forward first speed condition to its forward second speed condition, is upshifted from the forward second speed condition to its forward third speed condition, is upshifted from the forward third speed condition to its forward fourth speed condition, is upshifted from the forward fourth speed condition to its forward fifth speed condition, is upshifted from the forward fifth speed condition to its forward sixth speed condition, is upshifted from the forward sixth speed condition to its forward seventh speed condition and is shifted from the neutral condition to its reverse speed condition. Therefore, no description is given here for these cases.
  • the seventh speed clutch CT7 is turned from “ON” to "OFF”
  • the eighth speed clutch CT8 is turned from "OFF” to "ON”.
  • the first countershaft 40 and the second countershaft 50 are disconnected from each other while the intermediary shaft 20' and the auxiliary intermediary shaft 25 are connected to each other.
  • the power of the engine EG which is transmitted from the input shaft 10 through the first main drive gear GM1V, the connecting idle gear GCC and the connecting driven gear GCN to the intermediary shaft 20', is transmitted by the eighth speed clutch CT8 to the auxiliary intermediary shaft 25 and then through the eighth speed drive gear G8V and the eighth speed driven gear G8N to the output shaft 60.
  • the transmission 1' as a second embodiment achieves eight forward speed change ratios and one reverse speed change ratio.
  • the auxiliary intermediary shaft 25 is enclosed in the intermediary shaft 20'. This arrangement, which adds only a few parts to the transmission 1 as a first embodiment, enables the transmission to acquire one more speed change ratio for forward drive without any increase in the size in axial direction.
  • gears may experience a "sway" because of the axial thrusts generated from the contact of tooth faces of the gears during the torque transmission. As a result, a noise may be generated if the tooth bearing of the gears becomes insufficient.
  • the three shafts whose gears mesh with one another simultaneously i.e., the input shaft 10, the intermediary shaft 20 (or the intermediary shaft 20' and the auxiliary intermediary shaft 25) and the output shaft 60, can be disposed in a common plane to reduce the effect of the "sway" of these gears.
  • selective clutching means (selective clutch CTD) is used to connect either the fourth speed drive gear G4V or the reverse drive gear GRV because the fourth speed drive gear G4V and the reverse drive gear GRV are never connected simultaneously to the second countershaft 50.
  • this clutching means as a unit functions both as clutching means that connects or disconnects the fourth speed drive gear G4V to or from the second countershaft 50 and as clutching means that connects or disconnects the reverse drive gear GRV to or from the second countershaft 50. This arrangement is effective in lightening and compacting the transmission.
  • separate clutching means may be provided instead, one for connecting or disconnecting the fourth speed drive gear G4V to or from the second countershaft 50 and the other for connecting or disconnecting the reverse drive gear GRV to or from the second countershaft 50.
  • these clutching means can be the same friction clutches as used for the other clutching means.
  • a gear (first main drive gear GM1V) provided on the input shaft 10 is used as a commonly used gear both for driving the intermediary shaft 20 (intermediary shaft 20') and for driving the second countershaft 50, but two different (separate) gears may be provided on the input shaft 10 and be used one for driving the intermediary shaft 20 (intermediary shaft 20') and the other for driving the second countershaft 50.
  • a single gear provided on the input shaft 10 is used for driving both the intermediary shaft 20 (intermediary shaft 20') and the second countershaft 50 as described above, then the size of the transmission in its axial direction can be reduced by the degree of the replacement of these two gears with the single or commonly used gear.
  • the respective transmissions may further comprise a one-way clutch between the first speed driven gear G1N and the output shaft 60.
  • This arrangement makes the upshift from the forward first speed change ratio to the forward second speed change ratio smooth during the start-up of the vehicle because of the existence of the one-way clutch.
  • the first speed clutch CT1 is turned “ON” for the forward drive range from the first speed change ratio to the seventh or eighth speed change ratio, respectively, and it is turned “OFF” for the neutral condition and for the reverse drive.
  • parallel shaft transmissions according to the present invention are exemplified for use in vehicles.
  • these embodiments are only examples.
  • the use of parallel shaft transmissions according to the present invention is not limited to vehicles, so it can be used in various powered machines.
  • An input shaft 10 is connected rotationally with a first countershaft 40 through a second main drive gear GM2V and a second main driven gear GM2N, and a second countershaft 50 is provided externally, coaxially and rotatably with respect to the first countershaft 40.
  • a first main drive gear GM1V which is provided on the input shaft 10, always meshes with a first main driven gear GM1N, which is provided rotatably over the second countershaft 50.
  • a fourth, sixth and seventh speed drive gear G467V which is provided rotatably over the input shaft 10, always meshes both with a fourth speed drive gear G4V, which is provided rotatably over the second countershaft 50, and with a fourth, fifth, sixth and seventh speed driven gear G4567N, which is provided on the output shaft 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
EP04017757A 2003-08-07 2004-07-27 Getriebe mit parallelen Wellen Expired - Lifetime EP1522763B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003288688 2003-08-07
JP2003288688A JP4206312B2 (ja) 2003-08-07 2003-08-07 平行軸式変速機

Publications (2)

Publication Number Publication Date
EP1522763A1 true EP1522763A1 (de) 2005-04-13
EP1522763B1 EP1522763B1 (de) 2006-03-15

Family

ID=34114048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04017757A Expired - Lifetime EP1522763B1 (de) 2003-08-07 2004-07-27 Getriebe mit parallelen Wellen

Country Status (6)

Country Link
US (1) US7080567B2 (de)
EP (1) EP1522763B1 (de)
JP (1) JP4206312B2 (de)
CN (1) CN100422596C (de)
DE (1) DE602004000472T2 (de)
TW (1) TWI320464B (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4710428B2 (ja) * 2005-06-20 2011-06-29 マツダ株式会社 自動変速機
US7601095B2 (en) * 2005-07-20 2009-10-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Vehicle
US8050827B2 (en) * 2005-07-20 2011-11-01 Kanzaki Kokyukoki Mfg. Co., Ltd. Vehicle transmission system
JP4719599B2 (ja) * 2006-03-20 2011-07-06 本田技研工業株式会社 多段変速機
US8117932B2 (en) * 2007-01-03 2012-02-21 GM Global Technology Operations LLC Multi-speed transmission with countershaft gearing
US7752934B2 (en) * 2007-02-20 2010-07-13 Gm Global Technology Operations, Inc. Multi speed transmission having a countershaft gearing arrangement
US7703346B2 (en) * 2007-02-22 2010-04-27 Gm Global Technology Operations, Inc. Multi-speed transmission with countershaft gearing
GB0714320D0 (en) * 2007-07-23 2007-08-29 Jcb Transmissions Vehicle transmission
JP4720928B2 (ja) * 2009-03-31 2011-07-13 マツダ株式会社 手動変速機
KR101132454B1 (ko) * 2009-12-14 2012-03-30 강명구 삼중 클러치 변속기의 구동방법
JP5306982B2 (ja) * 2009-12-24 2013-10-02 本田技研工業株式会社 変速機
TWI494232B (zh) * 2011-08-05 2015-08-01 Byd Co Ltd 電動車輛及其驅動系統
CN102606688B (zh) * 2012-03-30 2014-10-01 长城汽车股份有限公司 一种车用七速变速器
WO2018020982A1 (ja) * 2016-07-25 2018-02-01 ジヤトコ株式会社 車両用変速機

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1375467A (de) * 1972-05-30 1974-11-27
JPS5854257A (ja) * 1981-09-28 1983-03-31 Kamizaki Kokyu Koki Seisakusho Kk 移動作業車の変速装置
US4682516A (en) * 1984-10-09 1987-07-28 Honda Giken Kogyo Kabushiki Kaisha Vehicular transmission with additional low speed
US4721002A (en) * 1985-05-25 1988-01-26 Kubota, Ltd. Clutch type change speed apparatus for working vehicle
EP0309288A2 (de) * 1987-09-25 1989-03-29 DANA CORPORATION (a Virginia corporation) Mehrganggetriebe
US4858495A (en) * 1988-06-08 1989-08-22 J. I. Case Company Multi-speed powershift transmission
US5445041A (en) * 1993-06-07 1995-08-29 Mercedes-Benz Ag Gearwheel change transmission of the countershaft type
EP1026423A2 (de) * 1999-02-03 2000-08-09 Honda Giken Kogyo Kabushiki Kaisha Parallelwellengetriebe
DE19860250C1 (de) * 1998-12-24 2000-11-02 Daimler Chrysler Ag Zahnräderwechselgetriebe mit zwei im Kraftfluß parallel zueinander angeordneten Teilgetrieben

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736929C3 (de) * 1977-08-16 1981-04-02 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Schaltbares Stirnradgetriebe
JPH0794854A (ja) 1993-09-27 1995-04-07 Matsushita Electric Works Ltd バイアホール付きプリント配線板

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1375467A (de) * 1972-05-30 1974-11-27
JPS5854257A (ja) * 1981-09-28 1983-03-31 Kamizaki Kokyu Koki Seisakusho Kk 移動作業車の変速装置
US4682516A (en) * 1984-10-09 1987-07-28 Honda Giken Kogyo Kabushiki Kaisha Vehicular transmission with additional low speed
US4721002A (en) * 1985-05-25 1988-01-26 Kubota, Ltd. Clutch type change speed apparatus for working vehicle
EP0309288A2 (de) * 1987-09-25 1989-03-29 DANA CORPORATION (a Virginia corporation) Mehrganggetriebe
US4858495A (en) * 1988-06-08 1989-08-22 J. I. Case Company Multi-speed powershift transmission
US5445041A (en) * 1993-06-07 1995-08-29 Mercedes-Benz Ag Gearwheel change transmission of the countershaft type
DE19860250C1 (de) * 1998-12-24 2000-11-02 Daimler Chrysler Ag Zahnräderwechselgetriebe mit zwei im Kraftfluß parallel zueinander angeordneten Teilgetrieben
EP1026423A2 (de) * 1999-02-03 2000-08-09 Honda Giken Kogyo Kabushiki Kaisha Parallelwellengetriebe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"NEW TRUCK TRANSMISSION SHIFT SMOOTHLY", MACHINE DESIGN, PENTON,INC. CLEVELAND, US, vol. 62, no. 4, 22 February 1990 (1990-02-22), pages 60 - 61, XP000102478, ISSN: 0024-9114 *
PATENT ABSTRACTS OF JAPAN vol. 0071, no. 41 (M - 223) 21 June 1983 (1983-06-21) *

Also Published As

Publication number Publication date
JP4206312B2 (ja) 2009-01-07
TW200514937A (en) 2005-05-01
DE602004000472D1 (de) 2006-05-11
EP1522763B1 (de) 2006-03-15
JP2005054959A (ja) 2005-03-03
TWI320464B (en) 2010-02-11
CN100422596C (zh) 2008-10-01
US7080567B2 (en) 2006-07-25
CN1580609A (zh) 2005-02-16
DE602004000472T2 (de) 2006-08-10
US20050028623A1 (en) 2005-02-10

Similar Documents

Publication Publication Date Title
JP4835853B2 (ja) 循環減速構造のダブルクラッチ変速機
US7225696B2 (en) Double clutch transmission
EP1531287B1 (de) Getriebe mit parallelen Wellen
EP1522763B1 (de) Getriebe mit parallelen Wellen
JP4973487B2 (ja) 複数クラッチ式変速機
US8479604B2 (en) Powertrain for an automotive vehicle with multiple-ratio gearing and a dual power input clutch
US7213480B2 (en) Motor vehicle transmission
EP1505316B1 (de) Parallelwellengetriebe
EP0821182B1 (de) Kompaktes Handschaltgetriebe für Kraftfahrzeuge
AU657651B1 (en) Drive transmitting apparatus for a working vehicle
JP5276272B2 (ja) 産業車両用変速機
US6332371B1 (en) Parallel shaft transmission
CA2211068C (en) Compact manual transaxle
CA2323596A1 (en) Six-speed manual transaxle
JP2006132572A (ja) 変速装置
JP2009250323A (ja) デュアルクラッチ式歯車変速装置
JP4489604B2 (ja) 平行軸式自動変速機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20050406

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

AKX Designation fees paid

Designated state(s): DE GB

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602004000472

Country of ref document: DE

Date of ref document: 20060511

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20061218

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130724

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20130724

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004000472

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004000472

Country of ref document: DE

Effective date: 20150203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140727